Asperger's and PDD-NOS will both be deleted from the upcoming DSM-V. It can, but not always, involve intense focus on details and routines, sometimes to the point of being utterly non-functional. Sadly, it's become a bit of a designer diagnosis which helps explain the apparent rise in the incidence of ASD cases. Frankly, it's a rare disorder where difficulty with social interaction and language issues can make life hell for otherwise capable individuals. There is a large gulf between intense interest, though, and obsession. In the end, it's the definition of "successful" in socializing that involves compliance with norms that many Asperger's individuals can't/won't reach. Think of yourself as a photographer first and someone with ASD issues second--make that a distant second.